I was excited to see the Reminders app added into iOS5 but it hasn't really been that useful. The big problem is that there is no little number that shows up on the icon to nag you that you have stuff to get done. You can set the app to have notifications, but I've yet to see any rhyme or reason on when those show up. It basically doesn't nag me enough, which a little number icon would be the right amount of a reminder, but not so invasive to be annoying. Is anyone finding the app useful? If so how are you implementing it into your life?